The x4400ps.dll file is an OEMPS module belonging to Tektronix TkGraphic from Tektronix Inc. This is part of a PostScript OEM (original equipment manufacturer) printer driver. A driver is a piece of software that helps your computer communicate with outside hardware such as printers or external drives.
Problems with drivers lead to your external devices not working. If you are getting an error with this file, the chances are good that your printer may not be working right. You can reinstall the driver if you have access to it, but you should also clean your registry.
ZookaWare PC Cleaner cleans up registry mistakes to get your computer back in action. ZookaWare PC Cleaner hunts down and fixes every error in your registry, guaranteed. Does your registry need to be cleaned up? Run a free ZookaWare PC Cleaner scan to find out.